<!DOCTYPE html>
<html>
<head>
    <title>Bootstrap按钮大小</title>
    <meta charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="lib/bootstrap/css/bootstrap.min.css" rel="stylesheet">
</head>
<body style="padding: 20px;width:500px;">
<!-- 标准的按钮 -->
<button type="button" class="btn btn-default">默认按钮</button>
<button type="button" class="btn btn-lg btn-default">大的默认按钮</button>
<br/><br/>
<!-- 提供额外的视觉效果，标识一组按钮中的原始动作 -->
<button type="button" class="btn btn-primary">原始按钮</button>
<button type="button" class="btn btn-sm btn-primary">小的原始按钮</button>
<br/><br/>
<!-- 表示一个成功的或积极的动作 -->
<button type="button" class="btn btn-success">成功按钮</button>
<button type="button" class="btn btn-xs btn-success">特别小的成功按钮</button>
<br/><br/>
<!-- 用于要弹出信息的按钮 -->
<button type="button" class="btn btn-info">信息按钮</button><br/><br/>
<button type="button" class="btn btn-block btn-info">块级信息按钮</button>
</body>
</html>
